NWS Forecast Office Houston/Galveston, TX

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Last Map Update: Tue, Jul 21, 2026 at 9:40:19 am CDT

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Heat Advisory

Dangerous Heat this Week

Tropical Storm Bertha

Today

Tonight

Very hot and humid conditions are expected on Tuesday with highs in the upper 90s to near 100F. Peak heat indices around 108F. A Heat Advisory is in effect for all of Southeast Texas from 11 am to 8 pm Tuesday. Be sure to practive heat safety whereever you are.

Tropical Storm Bertha is currently drifting northwestward in the eastern Gulf, with maximum sustained wind speeds of 50 mph. The system is expected to turn west, tracking towards our area later in the week. However, increasing wind shear, dry air, and land interaction with Louisiana are expected to limit Bertha's organization as it approaches southeast Texas. That being said, it is advised that you keep updated with the latest updates in case trends change.

It is going to be a hot and sunny day across Southeast Texas. Highs will range from 95-101°F, with heat indices climbing above 100°F. Remember to stay hydrated, take breaks in the air conditioning, and check on family, friends, and pets.

Tonight's forecast: Expect mild and humid conditions with partly cloudy skies. Overnight lows will range from 75–81°F.

Current Weather Observations...

Location	Time (CDT)	Weather	Vsby. (SM)	Temp. (ºF)	Dewpt. (ºF)	Hum. (%)	Wind (mph)	Wind Chill / Heat Index (ºF)	Pres. (in)
Bryan	08:55	Partly Cloudy	10	80	75	86	WSW 5	-	29.99
College Station	08:53	Mostly Cloudy	10	79	75	87	SW 9	-	29.96
Caldwell	08:55	Partly Cloudy	10	78	75	88	SSW 7	-	29.98
Huntsville	08:53	Mostly Clear	10	79	75	87	W 7	-	29.96
Navasota	09:15	Mostly Cloudy	10	81	81	100	W 6	93 [HI]	29.96
Brenham	08:55	Mostly Cloudy	10	79	76	89	W 3	-	29.96
Conroe	08:53	Mostly Clear	10	80	76	87	W 8	-	29.96
Cleveland	09:15	Clear	10				WNW 3	-	29.97
Liberty	09:15	Clear	8	80	77	88	VRB 3	-	29.94
Columbus	08:55	Overcast	10	80	76	88	W 3	-	29.97
Spring	09:17	Mostly Cloudy	7	82	76	81	VRB 6	-	29.96
Houston Intercontinental Aprt	08:53	Mostly Clear	10	82	76	81	WSW 9	-	29.95
Katy/Brookshire	09:15	Haze	6	84	78	83	WSW 7	95 [HI]	29.98
Texas Medical Center Heliport	09:15	Mostly Cloudy	9	80	75	83	WSW 8	-	29.95
Sugar Land	09:17	Partly Cloudy	10	78	76	93	W 8	-	29.96
Houston Hobby Airport	08:53	Partly Cloudy	8	82	76	81	W 10	-	29.95
Arcola/Sienna	09:15	Mostly Cloudy	10	80	77	89	WNW 5	-	29.98
Pearland	08:53	Mostly Cloudy	7	81	77	87	WNW 8	-	29.97
Ellington Field	08:54	Partly Cloudy	10	82	77	83	W 12	-	29.94
La Porte	08:55	Clear	10	82	77	83	W 9	-	29.96
Angleton/Lake Jackson	09:01	Mostly Clear	10	80	78	93	VRB 5	-	29.96
Galveston	08:52	Clear	10	82	78	87	W 12	91 [HI]	29.95
Bay City	09:15	Mostly Cloudy	10	80	80	100	VRB 3	-	29.92
Palacios	08:53	Mostly Cloudy	9	82	78	87	W 10	91 [HI]	29.95
Rig 20 Miles SE of Matagorda	09:20		9	84	78	83	WSW 10	95 [HI]	30.00

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